.update-text-style-panel {    &__container {        position: fixed;        z-index: 9999;        top: 0;        left: 0;        box-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);        background-color: #fff;        border-radius: 8px;        padding: 0 8px;    }    &__item {        cursor: pointer;        width: 30px;        height: 40px;        line-height: 40px;        text-align: center;        &:not(&:last-child) {            margin-right: 8px;        }    }}